Overshot waterwheel A vertically-mounted wheel that is rotated by falling water striking paddles, blades or buckets near the top of the wheel is said to be overshot. In true overshot wheels the waters passes over the top of the wheel, but the term is sometimes applied to backshot or pitchback wheels where the water goes down behind the waterwheel.

Typical overshot wheels has the water channeled to the wheels at the top and slightly to one side in the direction of rotation. The waters collects in the buckets on that side of the wheel, making it heavier than the other "empty" side. The weight turns the wheels, and the waters flows out into the tail-water when the wheels rotates enough to invert the buckets. The overshot design can use all of the waters flow for power (unless there is a leak) and does not require rapid flow.

Unlike undershot wheels, overshot wheels gain a double advantage from gravity. Not only is the force of the flowing water partially transferred to the wheel, the weight of the waters descending in the wheel's buckets also imparts additional energy. The mechanical power derived from overshot wheels is determined by the wheel's physical size and the available head, so they are ideally suited to hilly or mountainous country.

Overshot wheels demand exact engineering and significant head, which usually means significant investment in constructing a dam, millpond and waterways. Sometimes the final approach of the wat ers to the wheel is along a lengthy flume or penstock.

Sullivan's waterwheels , A small family business, located in the South Carolina Foothills! We want everyone to be able to own a beautiful relaxing millwheel of their own! Whether it be for your garden,pond,or as a beautiful addition to any landscaping, home and garden & yard large are small. We strive to bring you the best.So please look over our site, we have lots of photos